AI Search Companies in 2026
AI search companies build search systems that use large language models and neural retrieval to return synthesized, cited answers or LLM-ready content instead of a plain list of links. The category spans consumer answer engines (such as Perplexity and You.com), permission-aware enterprise search across workplace apps (such as Glean), and web search and retrieval APIs that supply real-time information to AI agents and applications (such as Exa, Parallel, Tavily and the Brave Search API).
AI Search Companies to know
We picked companies whose main product is AI-native search, answer generation or retrieval for AI. We selected using public signals as of October 2026: latest reported funding and valuation, stated usage and customers, and press coverage. Companies that fit better in a sibling directory were left out. That includes general agent builders (AI Agent Companies), vector databases (AI Infrastructure) and coding assistants (AI Coding). We kept both consumer answer engines and developer search APIs because both are central to the category.
Perplexity
AI answer engine that returns cited answers from live web search
Perplexity runs an AI search engine that summarizes web results into answers with citations. It offers free and paid tiers, the Sonar models and API, the Comet AI browser (launched July 2025, made free in October 2025) and Perplexity Computer, an AI agent launched in February 2026. Tracxn puts its total funding at about $1.72B across 11 rounds.
- Headquarters
- San Francisco, California, USA
Glean
Enterprise AI search and assistant across a company's workplace apps
Glean builds enterprise search that indexes data across connected workplace applications and returns results that respect each user's permissions. On top of that index it offers an AI assistant and AI agents. Wikipedia reports Glean reached $200M in annual recurring revenue in December 2025; Crunchbase News reports nearly $770M raised in total.
- Headquarters
- Palo Alto, California, USA
Exa
Web search engine and API built for AI agents and applications
Exa (Exa Labs) runs its own web search engine, with its own crawlers and embedding models, and sells an API that AI agents and applications use to retrieve web content. It offers general web search plus specialized indexes for people/company and code search. In May 2026 it reported serving more than 5,000 companies and 400,000 developers, including HubSpot, Cursor, Cognition and OpenRouter.
- Headquarters
- San Francisco, California, USA
Parallel Web Systems
Web search and research APIs and a web index built for AI agents
Parallel Web Systems builds web search and deep-research APIs on its own web index, designed for AI agents rather than people. Instead of ranked links, it returns dense excerpts sized for an LLM's context window. TechCrunch reported more than 100,000 developer users and customers including Clay, Harvey, Notion and Opendoor.
- Headquarters
- Palo Alto, California, USA
You.com
AI search and research platform with web-grounded answers and agents
You.com began as a search engine and launched YouChat, an LLM chatbot connected to live web results, in December 2022. It has since shifted toward AI productivity and research tools, including the ARI deep-research agent launched in February 2025, alongside its web-grounded search and YouPro subscription.
- Headquarters
- San Francisco, California, USA
Tavily
API-first search engine for LLM and AI agent workflows
Tavily offers a search API for AI agents that returns pre-processed text chunks with citations instead of a list of links. Nebius agreed to acquire Tavily in February 2026, and Tavily continues to operate under its own brand and serve its existing customers.
- Headquarters
- New York, New York, USA
Brave Search
Independent web index offered as a search engine and an API for AI grounding
Brave Search is Brave Software's search engine, which runs on its own web index. It launched in beta in June 2021 after Brave acquired Tailcat and left beta in June 2022. Brave sells a Search API with endpoints built for LLMs, including LLM Context for agentic search and Answers for cited summaries. Brave reports an index of more than 40 billion pages, and Wikipedia reports 1.6 billion monthly searches as of September 2025.
- Headquarters
- San Francisco, California, USA
Elastic
Company behind Elasticsearch, used for enterprise, vector and hybrid search
Elastic develops Elasticsearch and the Elastic Stack, used for enterprise search as well as observability and security. Elasticsearch serves as the retrieval layer for many search and retrieval-augmented generation applications, and in 2025 Elastic acquired Jina AI, a developer of search foundation models. Elastic is publicly traded on the NYSE.
- Headquarters
- San Francisco, California, USA
Consensus
AI search engine for peer-reviewed academic research
Consensus is an AI search engine and research workspace that finds and summarizes academic papers. The company says it has more than 10 million users across 12,500+ universities and has handled more than 150 million research questions.
- Headquarters
- San Francisco, California, USA
Kagi
Paid, ad-free search engine with AI assistant and summarization features
Kagi runs a subscription-funded, ad-free search engine that combines results from its own sources with those of other engines, including Google, Brave Search, Mojeek and Yandex. Its AI features include cited quick answers, Kagi Assistant (launched September 2024) and the AI-summarized Kagi News (September 2025). It also makes the Orion browser and offers 100 free searches before a subscription is required.
- Headquarters
- San Francisco, California, USA
AI Search Companies at a glance
| Company | Headquarters | Focus |
|---|---|---|
| Perplexity | San Francisco, California, USA | answer engine, consumer search |
| Glean | Palo Alto, California, USA | enterprise search, workplace AI |
| Exa | San Francisco, California, USA | search API, AI agents |
| Parallel Web Systems | Palo Alto, California, USA | search API, AI agents |
| You.com | San Francisco, California, USA | answer engine, deep research |
| Tavily | New York, New York, USA | search API, AI agents |
| Brave Search | San Francisco, California, USA | independent index, search API |
| Elastic | San Francisco, California, USA | enterprise search, vector search |
| Consensus | San Francisco, California, USA | academic search, answer engine |
| Kagi | San Francisco, California, USA | consumer search, ad-free |
Frequently asked questions
Which companies are the most notable AI search companies in 2026?
By reported valuation, the largest are Perplexity ($20B in a September 2025 round, with later reports of $21-23B), Glean ($7.2B in June 2025), Exa ($2.2B in May 2026), Parallel Web Systems ($2B in April 2026) and You.com ($1.5B in September 2025). Tavily (which Nebius agreed to acquire in February 2026), Brave Search, Elastic, Consensus and Kagi are also notable.
What is an AI search company?
An AI search company builds search that uses language models to return synthesized, cited answers or LLM-ready content. Examples include consumer answer engines like Perplexity, enterprise search like Glean, and search APIs for AI agents like Exa, Parallel and Tavily.
How do AI search APIs like Exa, Parallel and Tavily differ from answer engines like Perplexity?
Answer engines such as Perplexity and You.com are products people use directly. Exa, Parallel, Tavily and the Brave Search API are developer APIs: they return web content as excerpts or text chunks sized for an LLM's context window, which AI agents and applications use to ground their output.
What is enterprise AI search?
Enterprise AI search indexes a company's internal data across workplace applications and returns results that respect each user's permissions, often with an AI assistant on top. Glean is a prominent example: it raised $150M at a $7.2B valuation in June 2025 and reported $200M in annual recurring revenue in December 2025. Elasticsearch from Elastic is widely used to build in-house enterprise and vector search.
Has there been consolidation among AI search API providers?
Yes. In February 2026, Nebius agreed to acquire Tavily; terms were not officially disclosed. Tavily continues to operate under its own brand. In 2025, Elastic acquired Jina AI, a developer of search foundation models.
Are there AI search engines for specific domains?
Yes. Consensus focuses on peer-reviewed academic research and says it has more than 10 million users. Exa also offers specialized indexes for people/company search and code search.
More AI company directories
- Neocloud CompaniesCoreWeave, Nebius, Crusoe and more
- AI Inference CompaniesCerebras Systems, Fireworks AI, Groq and more
- Voice AI CompaniesElevenLabs, Deepgram, PolyAI and more
- AI Agent CompaniesSierra, Harvey, Decagon and more
- AI Infrastructure CompaniesDatabricks, Scale AI, Surge AI and more
- Healthcare AI CompaniesOpenEvidence, Abridge, Tempus AI and more
About this directory: OpenCurious curates this list for researchers, founders, operators and buyers. Company descriptions and headquarters are based on publicly reported information as of and change often; figures a company reports about itself are its own claims. This is an editorial selection, not a paid ranking: no company paid to be listed, and companies appear in no particular order. Company names and logos are trademarks of their respective owners and are used only to identify each company. See our editorial policy. To suggest a company or a correction, email hello@opencurious.com.
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